Columns in MSSQL are case insensitive

[LillaLux]

Append failed with the error message "f"Column(s) detected in the dataframe that are not in the database" but the columns are in the database. Example: dataframe col1 <-> MSSQL COL1. The default setting in MSSQL is case insensitive and due to this col1 is equal COL1 and the check shouldn't fail.